" I looked at my hand through it and saw nothing that was recognisable. Then I looked at several other things but saw nothing that I could clearly see. MacCruiskeen took it back with a smile at my puzzled eye.
"It magnifies to invisibility," he explained. "It makes everything so big that there is room in the glass for only the smallest particle of it—not enough of it to make it different from any other thing that is dissimilar. "

― Flann O'Brien , The Third Policeman